From 56093b6614a47b181bbce6d4e35d213a4e04120c Mon Sep 17 00:00:00 2001
From: kwolekr <kwolekr@minetest.net>
Date: Mon, 17 Jun 2013 18:23:31 -0400
Subject: Decoration: Change divlen to sidelen

---
 doc/lua_api.txt               |  5 +++--
 src/mapgen.cpp                | 10 ++++++++--
 src/mapgen.h                  |  2 +-
 src/script/lua_api/luaapi.cpp |  6 +++---
 4 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/doc/lua_api.txt b/doc/lua_api.txt
index b6981582e..85f6ca5a6 100644
--- a/doc/lua_api.txt
+++ b/doc/lua_api.txt
@@ -1875,8 +1875,9 @@ Decoration definition (register_decoration)
     deco_type = "simple", -- See "Decoration types"
     place_on = "default:dirt_with_grass",
     ^ Node that decoration can be placed on
-    divlen = 8,
-    ^ Number of divisions made in the chunk being generated
+    sidelen = 8,
+    ^ Size of divisions made in the chunk being generated.
+    ^ If the chunk size is not evenly divisible by sidelen, sidelen is made equal to the chunk size.
     fill_ratio = 0.02,
     ^ Ratio of the area to be uniformly filled by the decoration.
     ^ Used only if noise_params is not specified.
diff --git a/src/mapgen.cpp b/src/mapgen.cpp
index 49ac827e1..17afcf350 100644
--- a/src/mapgen.cpp
+++ b/src/mapgen.cpp
@@ -232,8 +232,14 @@ void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 	int carea_size = nmax.X - nmin.X + 1;
 
 	// Divide area into parts
-	s16 sidelen = carea_size / divlen;
-	float area = sidelen * sidelen;
+	if (carea_size % sidelen) {
+		errorstream << "Decoration::placeDeco: chunk size is not divisible by "
+			"sidelen; setting sidelen to " << carea_size << std::endl;
+		sidelen = carea_size;
+	}
+	
+	s16 divlen = carea_size / sidelen;
+	int area = sidelen * sidelen;
 
 	for (s16 z0 = 0; z0 < divlen; z0++)
 	for (s16 x0 = 0; x0 < divlen; x0++) {
diff --git a/src/mapgen.h b/src/mapgen.h
index e8252cbbf..f3d90a14e 100644
--- a/src/mapgen.h
+++ b/src/mapgen.h
@@ -199,7 +199,7 @@ public:
 	int mapseed;
 	std::string place_on_name;
 	content_t c_place_on;
-	s16 divlen;
+	s16 sidelen;
 	float fill_ratio;
 	NoiseParams *np;
 	
diff --git a/src/script/lua_api/luaapi.cpp b/src/script/lua_api/luaapi.cpp
index 75139861b..667a3afcf 100644
--- a/src/script/lua_api/luaapi.cpp
+++ b/src/script/lua_api/luaapi.cpp
@@ -683,7 +683,7 @@ int ModApiBasic::l_register_decoration(lua_State *L)
 
 	deco->c_place_on    = CONTENT_IGNORE;
 	deco->place_on_name = getstringfield_default(L, index, "place_on", "ignore");
-	deco->divlen        = getintfield_default(L, index, "divlen", 8);
+	deco->sidelen       = getintfield_default(L, index, "sidelen", 8);
 	deco->fill_ratio    = getfloatfield_default(L, index, "fill_ratio", 0.02);
 	
 	lua_getfield(L, index, "noise_params");
@@ -749,8 +749,8 @@ int ModApiBasic::l_register_decoration(lua_State *L)
 			break; }
 	}
 	
-	if (deco->divlen <= 0) {
-		errorstream << "register_decoration: divlen must be "
+	if (deco->sidelen <= 0) {
+		errorstream << "register_decoration: sidelen must be "
 			"greater than 0" << std::endl;
 		delete deco;
 		return 0;
-- 
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